The following tables summarize the various versions of TinyTERM and TERM, for both DOS and Windows platforms. They show which operating systems each version was originally supported on, the basic format of the serial number, and whether or not that version of TinyTERM is still eligible for telephone and email support. The table is organized from most current products to oldest.

Support information for all versions is available in this Knowledge Base.

Version	Year	Product	Activation Key	Currently Supported?	OSes
4.12.0-4.12.4	2017-present	TinyTERM TinyTERM Plus	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	Yes	Windows XP and newer
4.9.0-4.11.0	2015-2017	TinyTERM TinyTERM Plus TinyTERM AX for Web	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	No	Windows XP and newer
4.8.0-4.8.6	2013-2015	TinyTERM TinyTERM Plus TinyTERM AX for Web	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	No	Windows XP, Vista, Windows 7, Windows 8
4.7.6	2013	TinyTERM AX for Web (initial release)	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP (Registered Name required)	No	Windows XP, Vista, Windows 7, Windows 8
4.7.0-4.7.4	2011-2013	TinyTERM TinyTERM Plus TinyTERM AX for Web	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	No	Windows XP, Vista and Windows 7

Support for TinyTERM version 4.65 ended in August 2013. Support for TinyTERM versions 4.60-4.64 ended in February 2013.

Beginning with version 4.60, all products share the same 25-character activation key format.

Version	Year	Product	Activation Key	Currently Supported?	OSes
4.65	2011	TinyTERM TinyTERM Plus	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	No	Windows XP, Vista and Windows 7
4.60-4.64	2009-2011	TinyTERM TinyTERM Plus TinyTERM SHA	ADHSX-FH2C7-VVFF7-CHLRA-5EZRP	No	Windows XP, Vista and Windows 7

Support for TinyTERM versions 4.40-4.52 ended in May 2010.

TinyTERM Web Server was removed from the TinyTERM product line in version 4.60. Support for TinyTERM Web Server in all versions was also ended at that point.

Version	Year	Product	Serial Number	Curently Supported?	OSes
4.53	2007-2009	TinyTERM	E53777777EM	No	Windows 98se, Me, NT 4.0, 2000, XP and Vista
		TinyTERM Plus	P53777777EM		Windows 98se, Me, NT 4.0, 2000, XP, 2003 and Vista
		TinyTERM Web Server	S53777777EM	No
4.52	2006-2007	TinyTERM	E52777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	P52777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	S52777777EM
4.50	2005-2006	TinyTERM	E50777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	P50777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	S50777777EM
4.43	2005	TinyTERM	E43777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	P43777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	S43777777EM
4.42	2004-2005	TinyTERM	E42777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	P42777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	S42777777EM
4.41	2004	TinyTERM	E41777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	P41777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	S41777777EM
4.40	2004	TinyTERM	EV4777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	PL4777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Web Server	WS4777777EM

TinyTERM Thin Client was made an install option of TinyTERM Plus in version 4.40.

Support for TinyTERM versions 4.30-4.52 ended in May 2010.

Support for TinyTERM versions 4.00-4.21 ended in March 2007.

Version	Year	Product	Serial Number	Currently Supported?	OSes
4.30-4.33	2002-2004	TinyTERM	EV3777777EM	No	Windows 98se, Me, NT 4.0, 2000 and XP
		TinyTERM Plus	PL3777777EM
		TinyTERM Web Server	WS3777777EM		Windows 98se, Me, NT 4.0, 2000, XP and 2003
		TinyTERM Thin Client	TC3777777EM		Windows NT 4.0 Terminal Server, 2000 Server and 2003 Advanced Server
4.20-4.21	2001-2002	TinyTERM	EV2777777EM	No	Windows 95, 98, Me, NT 4.0, 2000 and XP
		TinyTERM Plus Edition	PL2777777EM
		TinyTERM Web Server Edition	WS2777777EM
		TinyTERM Thin Client Edition	TC2777777EM		Windows NT 4.0 Terminal Server, and 2000 Server
4.12-4.13	2000-2001	TinyTERM	EV1777777EM	No	Windows 95, 98, Me, NT 4.0 and 2000
		TinyTERM Plus Edition	PL1777777EM
		TinyTERM Web Server Edition	WS1777777EM
		TinyTERM Thin Client Edition	TC1777777EM		Windows NT 4.0 Terminal Server and 2000 Server
4.10-4.11	2000	TinyTERM	TTE777777EM	No	Windows 95, 98, Me, NT 4.0 and 2000
		TinyTERM Plus Edition	WPL777777EM
		TinyTERM Web Server Edition	WWS777777EM
		TinyTERM Thin Client Edition	WTC777777EM		Windows NT 4.0 Terminal Server and 2000 Server
4.02-4.05	1999	TinyTERM Plus Edition	WPL777777EM	No	Windows 95, 98 and NT 4.0
		TinyTERM Web Server Edition	WWS777777EM
		TinyTERM Thin Client Edition	WTC777777EM		Windows NT 4.0 Terminal Server
4.00-4.01	1998	TinyTERM Web Edition	TWE777777EM	No	Windows 95, 98 and NT 4.0

Version 3.3 combined the TinyTERM and TERM for Windows product lines, including ending the serial number in the letters EM. (No serial number ends in the letters OEM. Any serial number in that format actually uses the number zero, not the letter O.)

All products were released on CD from this point on.

Support for TinyTERM 3.3 and earlier Windows products ended in July 1999.

Version	Year	Product	Serial Number	Currently Supported?	OSes
3.3	1997-1998	TinyTERM	WTE777777EM	No	Windows 3.1, 95, NT 3.51 and NT 4.0
		TinyTERM Plus	WTP777777EM
		TERM Professional	WPN777777EM

All versions prior to 3.3 shipped on diskettes.

Version	Year	Product	Serial Number	Currently Supported?	OSes
7.2	1995-1996	TERM for Windows	WPE777777IW	No	Windows 3.1, 95 and NT 3.51
		TERM Professional	WPN777777IW
	1995-1999	TERM for DOS	DPE777777IB	No	DOS
3.2	1995-1996	TinyTERM Plus DOS	DTP777777TT	No	DOS
		TinyTERM Plus NFS DOS	DTN777777TT
		TinyTERM	WTE777777TT	No	Windows 3.1, 95 and NT 3.51
		TinyTERM Plus	WTP777777TT
		Plus[NFS]	WTN777777TT
		Simply[NFS]	WSN107107US
Pre 3.2 and 7.2	Up to 1995	TinyTERM	CSU777777TT	No	DOS
		TERM for DOS	CSU777777IB
		TERM for Windows	CSU777777IW	No	Windows 3.x

There are several possible solutions to this error:

1. If the version printed on the activation key card or listed in the license email does not match the install version, then this error will come up. Verify that the serial number you have matches the TinyTERM version you are installing. For example, older serial numbers will not work with the current TinyTERM download. And the serial number that comes with a TinyTERM CD is specific to that version of TinyTERM.
2. Check the serial number and activation key for typographical errors. The serial number will always be 11 characters long: one to three letters, six to eight numerals, then two letters. No serial number ends in the letters “OEM”. The capital letter O will actually be the number zero in all cases.The activation key is always eight letters. Depending on the font, this may make the lower-case letter l look like the number 1. It’s never a number, though.
3. When installing TinyTERM 4.52 from CD, you’re seeing a timing error. Despite what the install says, it’s not ready for the license yet.In this case, click the 30-Day Eval button instead. The install will continue from there. Once the install is done, go to Start | Programs | TinyTERM and run the License Manager.

   In License Manager, click the Upgrade button. Enter your serial number and activation key, then click Update License. Close the License Manager. TinyTERM will then be licensed, rather than an eval copy.

4. For a serial number that starts with the letters MMA, do not let the CD autorun. Instead, on the TinyTERM CD you’ll find a folder named “setup32_v33.” Run the setup.exe program in that directory instead. That will accept your license information.

That error means the TinyTERM license has already been entered into your PC’s registry. But if TinyTERM won’t start, there’s an error reading it back out.

The first thing to check is the license it’s reading. Right-click the shortcut you use to start TinyTERM. Select Properties from the pop-up menu.

On the Shortcut tab of the Properties, check the Target line. It will read something like this:

“C:\Program Files\Century\TinyTERM\tt.exe” -P52 default

The -P52 argument needs to match the first three characters of your serial number. For example, if you licensed TinyTERM with the serial number E43219876EM, you should have -E43 there.

If that argument does match, you’ll need to remove the TinyTERM license, then add it again through License Manager. If you are using Windows NT, 2000, XP or Vista, you’ll need to login as a local PC administrator first.

1. Click on Start | Run.
2. In the Run dialog, type:
   

   regedit

   then click OK. The Registry Editor will open.

3. In the Registry Editor, go to HKEY_LOCAL_MACHINE\Software\Century Software.
4. You’ll see a License1 key. You may also see License2, License3, etc., up to a maximum License9. Delete all License# keys one at a time, but don’t delete anything else.
5. When all the License# keys have been deleted, close the Registry Editor.
6. Run TinyTERM’s License Manager to re-enter your serial number and activation key.

If you go through these steps, you may still see the message, “This product is not licensed.” However, License Manager may then say the license has already been used. There are two possible reasons for this.

• You have more than one copy of the license file CenLic32.dll on the PC. Search the C: drive for that file name. For each copy that comes up, right-click on it and select Properties. Check the version number. If it does not match the version of TinyTERM you have installed, delete it. When all incorrect versions of the file are gone, the error will be as well.
• You are running Windows NT, 2000 or XP with a language requiring Unicode installed. This includes languages such as Chinese, Japanese and Korean, but other languages can cause this as well. This will not happen in TinyTERM version 4.33 or higher. The license code was rewritten in those versions to support Unicode.

For TinyTERM version 4.30 or 4.31, there is a patch. To use it, locate the existing CenLic32.dll file and rename it as a backup. Copy the patch into C:\Windows\System32 and rename it CenLic32.dll. Then go through steps 1-6 above.

There is no patch or other solution for versions prior to 4.30. A newer version of TinyTERM is required.

CR 142, Unicode licensing
CR 288, This serial number and activation key have already been used

This error means the license entry in the registry has become corrupt. To fix it, do the following:

1. Click on Start | Run.
2. In the Run dialog, type:
   

   regedit

   then click OK.

3. In the Registy Editor, go to HKEY_LOCAL_MACHINE\Software\Century Software.
4. You’ll see a License1 key. You may also see License2, License3, etc., up to a maximum License9. Delete all License# keys one at a time, but don’t delete anything else.
5. When all the License# keys have been deleted, close the Registry Editor.
6. Run TinyTERM’s License Manager to re-enter your serial number and activation key.

You may also be running into a Unicode issue, as described in this article. The only workaround in this case is to remove Unicode support, then go through the steps above.

If you’ve lost the card or email that has your serial number and activation key, you can get it from any PC that has the same version of TinyTERM installed. In TinyTERM versions 4.60 and higher, simply go to the Help menu and select About. The serial number and license key are displayed there.

For versions 3.3 through 4.53, the license is stored in the registry. To view it, click on Start | Run and enter:

regedit

In the Registry Editor, go to HKEY_LOCAL_MACHINE\Software\Century Software and click on the License1 key. The data string will include the serial number and activation key. The serial number will start with one of the following letter combinations:

WPL
PL
EV
TC
WS

There will be six or seven more digits, then the letters EM. That complete string is the serial number; e.g., PL12345678EM. If the serial number ends in EV instead, that’s an evaluation license. Go to the License2 key instead in that case.

Immediately after the serial number will be eight lower-case letters. Those are the activation key.

If you click on the License1 key but don’t see the serial number, you should see a series of two-digit hexadecimal numbers. That means you have TinyTERM version 4.33 or higher installed. To read that license, double-click the word “Default” in the key value. A dialog box named “Edit Binary Value” will come up. The right-hand column, which has lines of eight characters each, has the serial number and key. The serial number will start in the last two letters of the second line. It will start with either the letter P or the letter E.

If your version of TinyTERM is old enough that it does not write the license to the registry, search C: for a file named marathon.ini. The license will be written to that file also. If that file is missing, you won’t be able to recover the license at all.

You can find a table of Century Software, Inc., products and their associated serial number formats on this page.